A Cavity Green's Function Boundary Element Method With Spectral Domain Acceleration for Modeling of Reverberation Chambers

A novel boundary element method approach with the rectangular cavity Green´s function is presented and utilized to model reverberation chambers. Different from all other approaches that employ rectangular cavity Green´s functions, the computationally expensive part of the matrix-vector product is evaluated in the spectral domain. A drastic acceleration is achieved even though the algorithm operates with excellent accuracy. The approach is validated and compared against the boundary element method with free-space Green´s function. Examples demonstrate the usability of the proposed approach.